Dowel-machine.



H. A. RUSSELL.

DOWEL MACHINE.

APPLICATION FILED JUNE 27, 1912.

Patented Feb. 24, 191i 8 SHEETB-BHEBT 1.

COLUMBIA PLANOGRAPH c0., WASHINGTON. D c.

H. A. RUSSELL.

DOWEL MACHINE.

APPLICATION FILED JUNE 27, 1912.

1,088,372, Patented Feb. 24, 19M

3 SHEETS-SHEET 3.

a if i I I E =17 WITNESSES: lNl/E/VTOR 1f .19. J? an e 25 %0M Jm QZW By COLUMBIA PLANOORAPH couwAsmNGToN, n. c.

H. A. RUSSELL.

DOWEL MACHINE.

APPLICATION FILED JUNEZ'I, 1912.

' 1,088,372, Patented Feb. 24, 1914.

3 SHEETS-SHEET 2.

will

UH IZJQaJ eZZ coLuAmlA PLANOGRAPH CLLJVASHINGTON. D. c.

*urvrrnn %TATE% PATENT @Fhlfilt.

HERBERT A. RUSSELL, OF GRAND HEDGE, MICHIGAN, ASSIGNOR 0F ONE-HALF T0 JOHN M. GOULD, 0F GRAND LEDGE, MICHIGAN.

DOWEL-MACHINE.

2'0 aZZ whom it may concern:

Be it known that l, l-lnnnnn'r A. Russian, residing at Grand Led e, in the county of llaton and State of ltlichigan, have invented a new and Improved Dowel-Machine, of which the following is a specification.

This invention is in the nature of an improved means or machine in which the parts are designed and cooperatively arranged for conveniently and practically feeding dowel pins into a predetermined position, gluing the dowel receivin sockets in the rail or other member which the dowels are to engage, and for driving the said dowels into the sockets.

The object of my invention is to provide means for the general purposes stated of a simple and economical construction, in which the operation of holding the work to the dowel feeding and driving devices is easily and positively effected and the dowels caused to positively feed into position and to come into proper register with the sockets in the rail or other member and with the plunger devices for driving the dowels into the said sockets.

l Vith other objects in view that will hereinafter appear, my invention in its generic nature, embodies an improved and continuously operating feed mechanism for causing the dowel pins to individually ano successively move into a desired position on an endless carrier that cooperates with a driving means for bringing the dowels in position to be engaged by plunger devices, and with means for adjustably holding and feeding the rail or other member having the dowel receiving sockets into position to receive one or more of the said dowels.

My invention in its more subordinate features embodies certain details of construc tion and peculiar combination of parts all of which will be hereinafter fully explained, specifically pointed out in the appended claims and illustrated in the accompanying drawings, in which:

Figure 1, is a front elevation of my dowel feeding, gluing adn driving machine, the chair rail or dowel receiving member being indicated in dot and dash lines. Fig. 2, is a vertical section of the upper end of the same taken substantially on the line 22 on Fig. 1. Fig. 3, is a horizontal section, parts being in plan view, on the line 33 on Fig. 2. t, is a diagrammatic end elevation of Specification of Letters Patent.

Application filed June 27, 1912.

' member.

Patented Feb. 2 f, 1914.

Serial 210. 706,194.

the same and illustrates more particularly the clutch devices hereinafter referred to. Fig. 5, is a detail view of a portion of the endless chain that holds the dowels to be driven. Fig. (3, is a front elevation, the glue holder being in section, of the gluing devices. Fig. 7, a detail view of the means for actuating the glue plunger and wiper Fig. 8, is a detail view thereof, hereinafter specifically referred to. Fig. 9, is a detail plan view of the glue plunger shaft.

in carrying out my present invention, I include a special type of a dowel holding hopper and screw feed for agitating the dowels within the hopper and directing them singly to an. outlet that feeds the dowels in the desired position into receivers whose function is to convey the dowels to the points where they are to be engaged by the driving means.

In the practical application of my pres ent invention, and in its complete operative arrangement, it comprises a suitable framing or support, including the side uprights 11, upper cross bars or heads 10, and intermediate cross members 1]..

2 designates the dowel receiving hopper, 20 the cone shaped screw and agitating member having spiral grooves 21 that take up and direct the dowels 3 singly to a con tracted mouth which forms a discharging nozzle 22, the purpose of which will presently appear. The member 20 is fixedly mounted upon and arranged to turn with a shaft 2 1 journaled on the cross bar 10, and which carries a bevel pinion 19 that meshes with a drive pinion 13 on a drive shaft 14: that is suitably journaled in the bearings 15-15 on the cross bar or beam 10.

To provide for driving the feeder and agitater into and out of operative action as desired, the pinion 13 is loosely mounted on the shaft 14': and has a clutch hub 16 for engaging with a sliding clutch collar 17 on the shaft 1st, and which is shifted into and out of gear with the clutch hub 16 by the crank 18 on a rock shaft 19 that carries a lever 92*, as is clearly shown in Fig. 4-, of the drawing.

At this point, it should be stated, the shiftable clutch devices referred to are coupled. with and their shiftable movements control a second sliding clutch 4 on the shaft 14- that coaots with a clutch hub on a (rive pinion 5 also loosely mounted on the shaft l4 and whose function, when it is driven by the shaft 14 is to drive an upright shaft 6 journaled on the main frame, that has a drive gear which meshes with the pinion 5 and a driving gear or pinion 61 that meshes with a driven pinion 70 on a short countershaft 72 which has a driving pinion 71 that actuates the endless carrier devices that receive the dowels and convey them in position to be engaged by the driving means in the manner presently fully explained.

The endless carrier which is best shown in Figs. 2 and 3 comprises three triangularly disposed chain gears 8081-82, one of which 80 gears with and is driven by the gear 73 on the driven shaft 74. The endless carrier consists of links 83 and these are so spaced with respect to the plunger or dowel driving members, presently referred to, that at all times the carrier links under the plungers are in register, see Fig. 1. Each link 83 is formed with lateral apertured lugs 84 that form holders for supporting long tubular upright guides 85 into each of which a dowel pin 3 is fed as the said guides travel under the discharging nozzle of the dowel pin feeder devices, see Fig. 3.

9 designates an upper table that is horizontally rotatable with a vertical shaft 90 mounted on the main frame and above a lower table 91 adjustably mounted on the said shaft 90. The upper table 9 has a triangular recess, one edge 92 of which forms an upper bearing face for the chair rail or other member 9, into which the dowel pins are to be driven and which when set to the work is mounted on the lower table 91, it being understood the latter table is shifted up or down on the shaft 90 to bring the upper or dowel receiving end of the rail 5/ in proper position.

It will be noticed by referring to Fig. 3, the correlation of the endless carrier and the work holding tables is such that after setting the rail 9 in place, see dot and dash lines, and then moving the table in the direction indicated by the arrow, see full line position of the table handle 94, the rail 9 will be brought fiatwise to the machine and with its upper edge in register with the pin receiving guides of the links, it being understood the said upper edge of the rail has sockets and that they are. positioned to register with the said guides.

In the drawings, I have shown the parts so arranged and proportioned that seven dowel pins may be driven at one time, it being understood that in the practical application of my invention, the parts may be arranged for driving a greater or lesser number of nine at one time.

45 designates a plunger head, that is slidably mounted in vertical guides 46 pendent from an upper cross beam of the framing.

47 is a rod that pivotally joins with the head 45 and to the crank pin 49 adjustabiy held on the disk 48 mounted on a shaft 14 in line with the shaft 14 and provided with a clutch member 14 shaft 14 has a fast and loose pulley, see Fig. 2.

Plunger head 45 has a series of plungers 49, seven being shown, which at predetermined times enter the pin guides and drive the dowel pins into the rail g.

So far as described, the manner in which my machine is operated, is as follows: In starting the machine, the pin feeder devices are set in motion with the endless carrier, and the plunger devices being cut out. After the pin guides on the carrier are filled, the clutch devices are shifted, the pin feed mechanism and the carrier driv ing means are cut out and the plun 'er head shaft l4 is clutched with the shaft 14 to effect a driving action of the plunger head. On the return or up movement of the plunger head, the carrier is again started to bring the next set of pins in line with the plunger, after which the plunger is again actuated to drive the said next set of dowel pins into the next rail edge. in the complete arrangement of my invention the same includes means for gluing and wiping the rail sockets preparatory to receiving the dowel pins and to that end gluing mechanism especially designed for cceperating with the particular type of plunger mechanism shown is provided.

By referring now more particularly to Figs. 6, 7 8 and 9 of the drawings, designates a glue tank mounted in one side of the main frame of the machine and provided with a number of short discharging nozzles 36 in its bottom, seven being shown to harmonize with the number of plungers shown and hereinbefore described. 37 designates a rock shaft that is mounted in bear ings that project up from the top of the tank and this shaftcarries a number (seven) of crank arms 38. To each crank arm 38 is connected a combined valve and plunger that consists of a short rod section pivotally hung from the crank arm 38, and threaded at the lower end to receive a union coupling 56 to which is connected the upper threaded end of a long rod 57, the lower end of which terminates in a felt covered plunger 58 for singly engaging but slidable through its respective nozzle 36, the union coupling being provided to regulate the desired thrust movement of the plunger 58. 39 designates a supplemental crank arm on the rock shaft 37 that has a lateral lug 59 for cooperating with a tripper device pivoted at 66 and including a heel 67 for engaging the said lug 59. 68 designates a spring for returning the tripper to its 01 erative position and 69 is a spring connected to the crank 39 for rocking the shaft 37 g and pulling the plunger or valve ends 58 up to open the nozzles when the t-ripper device is disconnected from the lug 59. designates a foot lever. 26 is a rod that connects it with the tripper 65 for releasing the tripper from the lug 59 as the foot lever is depressed. 27 designates a rod pendent from the outer end of the crank 39, whose lower end passes through a slot in the foot lever and carries a stop 28.

In working the operator holds the rail or other member havin the pin receiving sockets up against the gluing tank, the nozzles 36 fitting into the sockets in the rail, and by pressing lightly against the foot lever, the tripper device is disengaged from the lug 59 and since the rock shaft 37 is now released, the spring instantly rocks it to lift the plunger valves out of the nozzles 36 and thus allow glue to be wiped into the several sockets in the rail piece. A further pressure on the foot lever will now not only bring the plungers 58 back to close the 11025- zles 36, but will force the said plungers through the nozzles and down into the rail sockets and wipe and spread the glue thoroughly over the socket walls. As the foot lever is released the spring attached to crank 39 returns the rock shaft wit-h the plunger-s 58 to the normal. position, the spring of the tripper device at the same time returning the tripper to rengage the lug 59.

95 indicates a sheet metal platform or guide that is on the main framing and which extends under all of that part of the carrier not in line with the stock having the notches for receiving the dowel pins and the mechanism cooperating therewith for feeding the dowel pins in place.

From the foregoing description taken in connection with the accompanying drawings, it is thought the complete construction, operation and advantages of my invention will be readily understood by those skilled in the art to which the invention relates.

What I claim is:

1. In a dowel pin driving mechanism; an endless carrier in which is included a series of regularly spaced vertically disposed tubular dowel pin receivers, a base over which the said receivers are conveyed and which includes a slotted member movable into a position in which the slot receives the dowel receiving member and into the path of movement of the receivers, and means for driving the pins held in the said receivers when they go into register with the slot in the movable member and drop into position upon the dowel receiving member.

2. In a machine of the character described, an endless carrier which includes guides, each adapted for holding a single dowel pin in an upright position, a support for the article into which the dowel pins are to be driven, a cut-off interposed between the carrier and the article support, the said cutoff having an opening for the pins to pass through, and means whereby the said cut-oft may be moved to bring the said opening in line with the pins and means for driving the pins through the openings into the article held for receiving them.

3. In a machine of the character described; a hopper having a pin discharging nozzle, an endless carrier having receivers each being adapted for holding a single pin in an upright position, means for holding the stock having sockets for receiving dowel pins in line with the carrier, an adjustable cut-off interposed between the stock and the carrier, plunger devices for driving the pins out of the receivers into the stock sockets when the cut-of is moved from under the carrier, a single drive shaft for actuating the plunger and the carrier and a clutch regulated transmission for joining the carrier and the plunger devices with the single drive shaft at predetermined times.

t. In a machine of the character described, means for gluing the pin receiving sockets in the stock, the said means including a glue tank having a discharging nozzle adapted to fit in the socket, a plurality of plungers that normally close the nozzles, means operable under a part of its movement to first lift the plunger to operate a flow of glue through the nozzle and then force the said plunger back through the aforesaid nozzle to close it to cut off the glue and to enter the glue socket.

5. In a machine of the character described, means for gluing the sockets in the stock that is to receive dowel pins, said means including a tank having at least one discharging nozzle adapted to fit into the socket to be glued, a combined plunger and valve member movable through the said nozzle, a spring actuated mechanism for moving the said plunger out of the nozzle to open the outflow for the glue, and a manually operated means for returning the said plunger to close the said nozzle and to project the same through the nozzle into the socket that receives the glue.

HERBERT A. RUSSELL.

Witnesses:

Jenn M. GOULD, Grocer D. Morris.

fiopies of. this patent may be obtained for five cents each, by addressing the commissioner of Patents,

Cir 

